VAAT Atex Axial Fans
Direct fans, versions 4 and 5
| Thermal Class Motor | Thermal Class Fan | Room Temperature | Airflow Temperature |
|---|---|---|---|
| T4 | T135°C (T4) | -20 ÷ +40°C | -20 ÷ +40°C |
| T3 | T200°C (T3) | -20 ÷ +40°C | -20 ÷ +40°C |
| TX | TX (Tmax allowed by motor) | -20 ÷ +40°C | -20 ÷ TX (Tmax allowed by the motor) |
3 GD Fans
Must necessarily have:
- inspection hatch to check for any dust build-up inside the drum and that the necessary gaps between moving and stationary parts are maintained;
- suitable gaskets designed to prevent excessive fluid leakage from the flanges;
- protective nets for suction and discharge*;
- motor suitable for the zone where it is used.
Impellers can be made of aluminium or glass fibre reinforced polyamide:
- aluminium with aluminium drum or carbon steel drum with riveted brass band, usable up to 245°C;
- glass fibre reinforced polyamide with carbon steel drum usable up to 110°C, for sizes up to 450 with 2-pole motors, up to 900 with 4-pole motors.
(*) The Atex directive and CE marking require compliance with the machinery directive, so the Atex fan, at the regulatory level, must be considered as a quasi-machine and therefore protected. A user who, after careful risk analysis, considers it advisable to remove the protections should still leave them with the fan in anticipation of using the fan for something else.
2 GD Fans
Exactly what was said about the 3 GD model applies, in addition the motor must be suitable for the different zone where it is used.